Questions and Answers
What are the laws and forces that a new driver should know? (Select all that apply)
What is Kinetic Energy?
The energy developed by an object while in motion.
What is Gravity?
The force with which the Earth attracts objects towards itself.
What should you do when driving downhill?
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To keep a parked car from rolling away, which of the following should you do? (Select all that apply)
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What does Newton's law of inertia state?
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The only way to prevent injuries in a collision is to wear your seat belt.
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What is Potential Energy?
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What is Friction?
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What does Traction refer to?
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Define Centripetal Force.
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What is Centrifugal Force?
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What is one of the laws of motion?
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What are the rules for safely cornering a curve? (Select all that apply)
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What is the Force of Impact?
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How does Speed relate to collisions?
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The vehicle that weighs less will take the greater impact in a collision.
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Study Notes
Laws and Forces for New Drivers
- Key forces for drivers include gravity, inertia, momentum, kinetic and potential energy, friction, and centrifugal/centripetal forces.
Kinetic Energy
- Energy an object develops while in motion; increasing speed significantly raises danger levels.
- Doubling speed increases kinetic energy fourfold, resulting in quadrupled braking distances.
Gravity
- The Earth's attraction force affects vehicle handling, especially when downhill.
- A vehicle's acceleration increases with gravity, potentially causing excessive speed.
Managing Driving Downhill
- Shift to a lower gear or gently apply brakes to maintain control and speed.
Preventing Parked Cars from Rolling
- Keep the car in low gear or 'Park' for automatics, apply the parking brake, and position front wheels to prevent rolling.
- Turn wheels toward the curb when parked downhill, and away when uphill. Use a brick as extra safety on inclines.
Newton's Law of Inertia
- An object at rest will stay at rest, and an object in motion continues in motion unless acted on by an unbalanced force.
Importance of Seat Belts
- Seat belts prevent occupants from moving forward during sudden stops by providing necessary resistance.
- Loose objects in the vehicle can become projectiles, causing injury during sudden stops — store them in the trunk.
Potential Energy
- The energy stored in an object due to its position or arrangement.
Friction
- Resistance that occurs between surfaces in contact, crucial for movement and control.
- Essential for starting, stopping, and turning; proper lubrication is necessary to maintain effective friction in vehicle components.
Traction
- Factors affecting traction include stopping distance, centrifugal force, and hydroplaning; an increase in any can diminish traction and control over the vehicle.
Centripetal Force
- The force that changes the direction of a moving object along a curved path.
Centrifugal Force
- A pseudo force that appears to pull outward on a body in circular motion, increasing with acceleration; it's the reaction to centripetal force.
Laws of Motion
- For every action, there is an equal and opposite reaction, fundamental to understanding movement and collisions.
Safe Cornering Guidelines
- Decelerate before curves, brake gently while turning if necessary, and downshift in manual transmissions.
Force of Impact
- The impact force increases with speed; higher speeds result in greater collision impact and damage.
Speed and Collision
- Doubling a vehicle’s speed quadruples its force of impact in a collision.
Impact in Vehicle Collisions
- In collisions between vehicles at the same speed, the lighter vehicle experiences greater impact force relative to its mass.
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Description
Test your knowledge of essential laws and forces that every new driver should know in this Drivers Ed Module 3 quiz. From gravity to kinetic energy, this quiz covers crucial concepts that ensure safer driving. Challenge yourself with these key terms and their definitions!
